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fix: ensure req.url matches moduleByEtag URL to avoid incorrect 304 r… #17997

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Sep 10, 2024
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6 changes: 3 additions & 3 deletions packages/vite/LICENSE.md
Original file line number Diff line number Diff line change
Expand Up @@ -2156,11 +2156,11 @@ Repository: lukeed/mrmime

## ms
License: MIT
Repository: zeit/ms
Repository: vercel/ms

> The MIT License (MIT)
>
> Copyright (c) 2016 Zeit, Inc.
> Copyright (c) 2020 Vercel, Inc.
>
> Permission is hereby granted, free of charge, to any person obtaining a copy
> of this software and associated documentation files (the "Software"), to deal
Expand Down Expand Up @@ -2447,7 +2447,7 @@ Repository: alexeyraspopov/picocolors

> ISC License
>
> Copyright (c) 2021 Alexey Raspopov, Kostiantyn Denysov, Anton Verinov
> Copyright (c) 2021-2024 Oleksii Raspopov, Kostiantyn Denysov, Anton Verinov
>
> Permission to use, copy, modify, and/or distribute this software for any
> purpose with or without fee is hereby granted, provided that the above
Expand Down
5 changes: 4 additions & 1 deletion packages/vite/src/node/server/middlewares/transform.ts
Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,10 @@ export function cachedTransformMiddleware(
const ifNoneMatch = req.headers['if-none-match']
if (ifNoneMatch) {
const moduleByEtag = environment.moduleGraph.getModuleByEtag(ifNoneMatch)
if (moduleByEtag?.transformResult?.etag === ifNoneMatch) {
if (
moduleByEtag?.transformResult?.etag === ifNoneMatch &&
moduleByEtag?.url === req.url
) {
// For CSS requests, if the same CSS file is imported in a module,
// the browser sends the request for the direct CSS request with the etag
// from the imported CSS module. We ignore the etag in this case.
Expand Down
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